# knotecards vs NihonMaster

The clearest difference is price: NihonMaster at Free against knotecards's $3.99. NihonMaster also leads on update cadence (every 5 days vs every 6 weeks) and iOS requirement (14.0 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

NihonMaster is free to download; knotecards costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

knotecards ships an update every 6 weeks, NihonMaster every 5 days. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | knotecards | NihonMaster |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/knotecards/id6748163448/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Paid | — |
| Size | 1 MB | 38 MB |
| Requires iOS | 17.6 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [altymytry](https://appshunter.io/developer/1824557021) | [joppe montezinos](https://appshunter.io/developer/1890497008) |

## What reviewers say

### knotecards

[App page](https://appshunter.io/ios/app/knotecards/id6748163448)

Prepare for your Private Pilot Checkride with flashcards created by Certified Flight Instructors. This study tool covers ACS standards and includes sources for accurate information. Organize cards by knowledge level for efficient learning.

**Highlights:** Flashcards designed by CFIs, Covers ACS Standards, Includes sources for accuracy, Systematic and weighted card viewing, Covers 141 curriculum areas

**Features:** macOS Compatibility

**In-app purchases:** none


### NihonMaster

[App page](https://appshunter.io/ios/app/nihonmaster/id6761620677)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is knotecards free?

knotecards costs $3.99, with no in-app purchases.

### Is NihonMaster free?

NihonMaster is free to download, with no in-app purchases.

### Do knotecards or NihonMaster have ads?

Neither knotecards nor NihonMaster shows ads.

### Which is updated more often, knotecards or NihonMaster?

knotecards ships an update every 6 weeks, and NihonMaster every 5 days. Most recently, knotecards was updated on September 30, 2026 and NihonMaster on September 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*